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Production method of PPS (poly(p-phenylene sulfide)) filter cloth

A production method and filter cloth technology, applied in the field of PPS filter cloth production, can solve problems such as complicated procedures, and achieve the effects of simple process, reduced use, and reduced labor force

Pending Publication Date: 2018-11-06
JIANGSU DINGSHENG FILTER BAG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above methods all have problems such as complicated procedures. Therefore, improving a fast and efficient method for preparing filter cloth and effectively preventing the generation of pinholes is currently a difficult problem for filter cloth and bag technicians.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of production method of PPS filter cloth, the steps are as follows:

[0015] (1) Preparation of modified PPS fiber: PPS slices are melted and extruded through a twin-screw extruder, and then the melt is extruded to the spinning box for spinning, and colloidal substances are added to the melt, and the addition of colloidal substances The amount is 1.7% of the melt mass, and then two-stage stretching, heat setting, and cooling are used to obtain PPS fibers; the spinning temperature is 305 ° C, and the total draw ratio is 2.5;

[0016] (2) Preparation of parallel-twisted yarn: modified PPS fiber and common PPS fiber are twisted to obtain parallel-twisted yarn, and the ratio of the two is 60:40;

[0017] (3) Preparation of filter cloth: common PPS fiber filaments and twisted yarns are used to prepare filter cloth together, wherein the twisted yarns are only arranged in the parts that need to be sewn, and the number of twisted yarns arranged continuously at the sewing...

Embodiment 2

[0019] A kind of production method of PPS filter cloth, the steps are as follows:

[0020] (1) Preparation of modified PPS fiber: PPS slices are melted and extruded through a twin-screw extruder, and then the melt is extruded to the spinning box for spinning, and colloidal substances are added to the melt, and the addition of colloidal substances The amount is 0.8% of the melt mass, and then two-stage stretching, heat setting, and cooling are used to obtain PPS fibers; the spinning temperature is 308 ° C, and the total draw ratio is 2.5;

[0021] (2) Preparation of parallel-twisted yarn: modified PPS fiber and common PPS fiber are twisted to obtain parallel-twisted yarn, and the ratio of the two is 60:40;

[0022] (3) Preparation of filter cloth: common PPS fiber filaments and twisted yarns are used to prepare filter cloth together, wherein the twisted yarns are only arranged in the parts that need to be sewn, and the number of twisted yarns arranged continuously at the sewing...

Embodiment 3

[0024] A kind of production method of PPS filter cloth, the steps are as follows:

[0025] (1) Preparation of modified PPS fiber: PPS slices are melted and extruded through a twin-screw extruder, and then the melt is extruded to the spinning box for spinning, and colloidal substances are added to the melt, and the addition of colloidal substances The amount is 1.2% of the melt mass, and then two-stage stretching, heat setting, and cooling are used to obtain PPS fibers; the spinning temperature is 306 ° C, and the total draw ratio is 2.5;

[0026] (2) Preparation of parallel-twisted yarn: modified PPS fiber and common PPS fiber are twisted to obtain parallel-twisted yarn, and the ratio of the two is 60:40;

[0027] (3) Preparation of filter cloth: common PPS fiber filaments and twisted yarns are used to prepare filter cloth, wherein the twisted yarns are only arranged in the parts that need to be sewn, and the number of twisted yarns arranged continuously at the sewing parts is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a production method of PPS (poly(p-phenylene sulfide)) filter cloth. The production method comprises the steps of adding a colloidal substance capable of being subjected to hot melting at a certain temperature into a PPS fiber melt spinning process to form modified PPS fibers, doubling and twisting the modified PPS fibers and ordinary PPS fibers, and preparing the filter cloth from doubling and twisting yarns. The filter cloth is influenced by the temperature during work; pin holes can be blocked by a small amount of the colloidal substance in the modified PPS fibers,so that the filtration efficiency is improved; and the method is simple in technology and easy to operate.

Description

technical field [0001] The invention relates to the technical field of textile chemical industry, in particular to a production method of PPS filter cloth. Background technique [0002] At present, environmental pollution is becoming more and more serious, and the government has clear requirements on the discharge of industrial waste gas, etc. Therefore, the use of filter cloth and filter bags is becoming more and more extensive. In order to meet high emission requirements, the manufacturing requirements of filter cloth and filter bags have also increased. [0003] The main materials used for filter cloth and filter bags are PPS (polyphenylene sulfide), aramid fiber, etc. Among them, PPS is the most widely used for its excellent high temperature resistance and corrosion resistance. [0004] The manufacturing process of filter cloth filter bags generally needs to be sewn, and some pinholes will appear during the sewing process, which will affect the efficiency and quality of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/08D02G3/02D02G3/46
CPCB01D39/083D02G3/02D02G3/46D10B2505/04D10B2331/301
Inventor 王功富顾明煌王磊王伟伟
Owner JIANGSU DINGSHENG FILTER BAG CO LTD
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